So we have this fully working PCB Fabrication setup at the hackerspace now. If you’re interested in getting started we recommend having something to fabricate. Designing a circuit could be done in Microsoft Paint, but for good results we suggest something a bit more… powerful to help you get component footprints on right among other things. Electronic Design Automation tools such as KiCAD fill that spot well.
If you are interested in putting together a design, check out this tutorial to give you a great kick start on using KiCAD to design your circuit board. You’ll probably want to stick to a single side board for your first round. Lining up layers can be a bit tricky with our current system. We’re working on getting a system in place to make this more predictable.
If you have problems, please feel free to drop a question on the mailing list or come by when the space is open some time.